It is quite common for dreams to use the image of the devil as a symbol for evil. This particular dream reflects the dreamer's anxiety that some harm might come to the loved ones. Note that the dream illustrates the dreamer's own feelings, rather than predicting any actual event.
Dreams about loved ones who have passed away are entirely normal, particularly while you are mourning or feeling lonely. Such dreams reflect your own love and grief. Usually, they do not tell you anything about the deceased or mean that that dead are trying to contact you.
The dream shows that the dreamer feels a strong sense of responsibility to protect loved ones.
Anxiety about your relationship with them changing.
The dream's meaning depends on who you dreamed about. Dreams of loved ones are very common and normal, especially during the period of mourning. These dreams help your unconscious mind accept the reality and permanence of your loved one's absence.
Loved ones who have passed away cannot do that.
It is entirely normal to dream of loved ones who have passed away. The house in the dream is a metaphor for the life that you shared together. The dream is a natural part of your grieving process, and is part of your mind's effort to help you heal from your loss.
Your probably stressed from a previous fight or argument, it's a dream and it may happen with many loved ones of yours... Advise: Don't kill him in real life, if you love him you will stick with him (not kill him in that matter.)
Quite a lot depends on what is not described about this dream. If the dreamer was trying to intervene but couldn't, the dream is about feelings of helplessness and impotence. If, on the other hand, the dreamer was standing by and watching without caring, the dream is about problems in the relationship. The real meaning of the dream is usually found in the dreamer's emotions - sad, glad, mad or scared. That emotion can often be matched with some situation in real life, which is what the dream is ultimately about.
Loved ones
The symbolism for protecting your sister is bravery and love
It is normal to dream about loved ones who have passed away. Our minds have a need to hold on to people we love when they are gone.
This appears to be a wish-fulfillment dream. The subconscious mind creates a lovely story for the dreamer to enjoy in the security of sleep, often as a means of denying unpleasant realities such as the death of loved ones.